Magnetically controlled tape pulling device



June 6, 1933. A. D. EITZEN .MAGNETICALLY CONTROLLED TAPE PULLING DEVICE Filed Dec. 28, 1928 .4 2W, BY w L ATTORNEY Patented June 6, 1933 UNITED STATES PATIENT OFFICE AUGUST D. EITZEN, OF NEW YORK, N. Y., ASSIGNOR TO NEWS PROJECTION CORPORA- TION; OF NEW YORK, N. Y-., A CORPORATION 01F NEW YORK MAGNETICALLY CONTROLLEDTAPE PULLING DEVICE Application filed December 28, 1928. Serial No. 829,027.

- This invention relates to stock quotation projecting machines and more particularly 1 to magnetically controlled tape pulling devices. I

With some of the stock quotation pro ectit is one of the objects-0f the present invention to provide a new initiating mechanism for controlling the tape drawin devices whichmay conveniently be positloned between the ticker and the projecting machine to cooperate with the portion ofthe tape located in such area.

It is still another object of the present invention to provide a tape drawing device which is controlled by the fluctuation in. a cell sensitive to light rayssuch as a photo cell, selenium cell or the like. a

It is still a furtherobject or the fpresent invention to provide a combination or controlling the operation of a tape pulling device which includes a mechanism sensitive to light rays such as a photo cell, selenium cell or ing machines today in use, it has been de-sir the like which is operatively connected t0 cause the tape drawing device to come'to rest when the tickercomes to rest and in turn which is operative to cause the tape pulling or drawing device to operate when the ticker.

operates. To this end, the present invention specifically contemplates providing means which will obstruct the passage of light rays .to the light sensitive cell when the ticker operates and thereby be effective to initiate the start of the tape pulling device and in turn permit the light rays to reach the cell when the ticker comes to rest and thereby be effective to cause the tape pulling device to come to rest.

1 Specifically, the invention still further aims to provide a tape pulling device which is op'eratively connected to an electric motor a switch that is controlled by a cell sensitive to light rays, and which cell is positioned relative to the slack or loop formed between the ticker and the projecting machine so that the loop there formed when the ticker starts operating will be relied upon to obstruct the passage of light rays to the cell and thus increase the resistance in the circuit of a switch controlling magnet to permit the magnet to liberate the switch and permit it to form contact for the electric motor aforesaid operatively connected to actuate the tape pulling device.

These and other features, capabilities and advantages of the invention will appear from the subjoined detail description'of specific. embodiments thereof. illustrated in the accompanying drawing in which I Figure 1 is a fragmenta'l side elevation partly in section of a stock quotation pro.- jectingmachine equipped with the present improvement;

Fig. 2 is a fragmental end elevation partly in section; and

Fig. 3 is an enlarged fragmental section of a portion of another embodiment of the invention.

In the embodiment illustrated, there is shown a ticker 1 from which the" tape T issues passing over the housing 2 to the roller 3 at the edge of the projector, 4. The tape passes across the projector'4 to the idler 5 of the same and then down to the tape drawing roller 6, between which and the friction creating idler 7 the tape is located and from which tape drawing roller the tape .passes to the' rewind reel 8.

:The tape drawing roller 6, in the present in- 1 stance, is provided with a pulley 9 which is connected to the pulley 10 on the shaft 11 by the belt 12, and the rewind reel 8 is providedg'with a pulley 13 which is connected to thepulley 14 by the belt 15. The pulley 14 is also mounted on the shaft 11.

on the shaft ll there is fixed the worm wheel 16 which meshes with the worm 17 on theshaft 18 of the motor 19. One of the terminals or the motor 19 isjconnected the conductor 20 with the conductor 21, whic and" which electric motor is provided with is connected to the outlet plug 22. The other terminal of the motor 19 is connected by the conductor 23 with the mercury switch 24, which mercury switch 24 is connected by the conductor 25 to the conductor 26 of the outlet plug 22. l

The mercury switch 24 is mounted on the platform 27 pivotally mounted at 28 on the standard 29. The platform 27 of the mercury switch 24 is provided with a link 30 which is pivotally connected to the armature 31 pivotally connected at 32 to the bracket 33. The armature 31 is positioned to be acted upon by the magnet 34 which is connected to the conductor 21 and is also provided with the conductor 35 which is connected to the light sensitive device, in the present instance illustrated as a selenium cell 36, which selenium cell is connected to the outlet plug 22 by the conductor 26 aforesaid. The selenium cell 36, in the present instance, is positioned in the housing 2 aforesaid, preferably secured to the ticker as illustrated in Fig. 1 opposite to the opening 37 formed in the housing 38 of the lamp 39, the rays of the lamp 39, as illustrated in Fig. 1, passing upwardly to the deflector 40 and from there passing through the opening 37 in the direction of the opening 41 of the housing 2 to the cell 36.

When the ticker is operating, and a loop is formed in the tape T, such loop, as indicated in Fig. 1, will sag and extendinto the path of movement of the light ra sfrom the deflector 40 to thecell 30 to 0 struct the passage of the light rays so deflected and thus cause the cell 36 to increase its resistance to cut ofl or diminish the flow of current to the magnet 34 is the usual way, thereby permitting the armature 31 to descend and closethe current to the motor 19, in turn to actuate the tape pulling roller 6 and rewind reel 8. On the other hand, as soon as the ticker stops operating, the tape pulling roller 6'will continue to pull the tape through the projecting machine until the loop or slack formed between the ticker 1 and the projector 4 has been sufficiently taken up to clear the path of travel of the light rays from the deflector 40 to the cell 36. As soon as sufficient light rays thereupon pass to the cell 36 to decrease the resistance sufiiciently to permit the current to energize the magnet 34, the armature 31 will be ralsed in turn to rock the mercury switch 24 and interrupt the current to the motor 19, where- 1 upon the motor 19 will gradually come to rest and in turn cause the tape drawing roller 6 also to come to rest and thereby cause the tape T to come to rest.

The embodiment illustrated in Fig. 3 is substantially identical with the embodiment illustrated in Fig. 1, with the exception that a shutter 42 is relied upon to interrupt the passage of the light rays from the deflector 40 to the cell 36 instead of a loop in the tape T, and as a result thereof the housing 2 for the cell 36 is located immediately adjacent to the aperture 37 instead of spaced therefrom as shown in the embodiment illustrated in Fig.

1. Furthermore, both the housing 2 and the lamp 39 are disposed at a lower level relative to t e projector 4 than is the case with the housing 2 and housing for the lamp 39 of the embodlment illustrated in Fig. 1.

The shutter 42 is formed at the end of an arm 43 pivotally connected at 44 to the bracket 45 extending from the housing 2. The arm 43 is provided with an extension 46 which is connected by the spring 47 with a suitable abutment. The arm 43 is ositioned as shown in Fig. 3 immediately elow the space formed below the ticker 1 and the projector 4 so that the loop L formed in the tape T at such position when the ticker operates will bend down into engagement with the arm 43 and cause the shutter 42 to extend down over the recess 41 formed in the housing 2 to obstruct the passage of light rays from thedefiector 40 to the cell 36. The spring 47 is adjusted so that it will be sufficiently sensitive to permit the weight of the loop L to depress the arm 43 when the ticker operates and yet have suflicient strength to raise the arm 43 into the dash and 'dot position shown in Fig. 3 when the ticker comes to rest and the loop L has been sufficiently dissipated to rise into the dash and dot position shown in Fig. 3. In order to facilitate producing a loop L at the position indicated between the ticker l and the projector 4, the idler 3 is preferably provided to cooperate with a pressure roller 48, between which pressure roller 48 and idler 3 the tape T isslightly impinged to resist the immediate passage of the tape between the same unless the tape roller 6 is operating to exercise a drawing action on the tape. The spring 47 7 general spirit of the invention as set forth in the appended claims.

I claim:

1. The combination with a ticker intermittently ejecting ticker tape, of a tape pulling roller, a controlling device sensitive to light rays operatively connected and responsive to vertical deflections in the tape to control the operation of said tape drawing roller,

and means for causing said controlling device to cause said tape drawing roller to come to rest when said ticker comes to rest.

2. In a stock quotation projecting machine forming a loop in the tape in front of the projector when the ticker operates, the combination with a ticker intermittently ejecting ticker tape, of a tape drawing roller, and a Ill controlling device sensitive to light rays operatively connected to said tape drawing roller and responsive to vertical deflections in the tape to control the operation of the same, said controlling device being disposed in position tocooperate with the loop formed in the tape to cause said tape drawing roller to come to rest when the ticker comes to rest.

3. In a stock quotation projecting machine, the combination with a tape, of a-tape impinging device disposed for causing the formation of a loop in the tape in advance of the projecting'position, a tape drawing device, a controlling device sensitive to light rays, and a lamp for directing light rays to said controlling device, said lamp and con.-

trolling device being disposed to permit the loop formed in said tape to interrupt the passage of the light rays from said lamp to said controlling device to cause said tape drawing roller to be operated and disposed to permit the passage of the light rays from said lamp to said controlling device to cause said tape drawing roller to come to rest when the loop formed in the tape is dissipated.

4, In a device of the character described, the combination with a tape, of an impinging device for causing the tape to form a loop before it passes to the projecting position, a tape drawing device, actuating means including an electric switch for actuating said tape drawing device, a selenium cell, and a lamp for directing rays to said selenium cell, the loop formed in the tape extending into the path of travel of the light rays from said lamp to said selenium cell, said selenium cell being operatively connected to said switch element to cause said actuating means to be actuated when the passage of the light rays from said lamp to said selenium cell are interrupted by the loop in the tape and to cause said actuating means to, come to rest when the passage of the light rays from said lamp to said selenium cellis permitted uponthe dissipation of the loop in the tape.

5. In a tape feeding mechanism adapted for use with a stock ticker and a projecting mechanism, the combination with a tape in termittently ejected by a ticker, of a tape drawing device, actuating means including a switch element for operating said tape drawing device, and a controlling device for operating said switch element, said controlling device including a loop in the tape when the ticker operates, a source of light, an element sensitive to light rays positioned to receive light rays from said source'of light when the ticker is at rest and the loop is dissiipated, and means including said loop formed in the tape when the ticker operates for interrupting the passage of the light rays from said source of light to said element, said sensitive element being operatively connected to said switch element in turn to cause said tape drawing device to be operated when said loop is formed and to come to rest when forming a loop in the tape when the ticker operates, a shutter normally permitting the light rays from said source of light to pass to said sensitive element and disposed in the path of movement of the loop in the tape to be actuated into the path of the light rays to interrupt the passage of the light rays from said source of light to said sensitive element, said sensitive element being connected to operate said switch element in turn to cause said tape drawingdevice to be operated when the light rays to said sensitive element are interrupted and to permit said tape drawing device to come to rest when said loop is dissipated.

.AUGUST DJEITZEN. 

